TECHNICAL FIELD
[0001] Embodiments presented herein relate to wireless access networks, and more specifically
to methods, control nodes, computer programs, and a computer program product for public
information and public warning systems.
BACKGROUND
[0002] Wireless public information systems, where information is broadcasted wirelessly
to the public from a central source, such as a government organization, have been
around for a long time. The broadcasted data can be for information purposes, e.g.,
to inform the public about construction work affecting availability of utilities such
as electrical power, or for warning purposes, e.g., to inform the public about the
current state of an ongoing wildfire. An important property in a public information
system is the ability to reliably reach as many members of the public as possible.
[0003] Traditionally, broadcasting of information or warning messages to the public has
been done over television and public radio media. For instance,
US20060005219 discloses a standby television warning system for public warning. This warning system
improves on the delivery reliability of public warning messages in that a television
can receive the broadcast even when in standby mode.
[0004] The public are shifting away from traditional broadcast media. Television is now
mainly distributed via cable or the Internet, and radio media is often received as
internet radio. To improve further on the coverage and reliability of public information
systems, mobile access networks can be used to broadcast data to the public. For instance,
US20090233634 discloses a public warning system for mobile devices. This type of public information
system based on wireless access networks advantageously reaches the part of the public
that do not have access to traditional broadcasting systems like television and public
radio.
[0005] However, wireless access networks such as the second (2G), third (3G), fourth (4G),
or fifth (5G) generation mobile access networks may not always be robust in the face
of, e.g., natural disasters, or may not always have sufficient radio coverage to reach
all members of the public.
SUMMARY
[0006] The scope of the invention is set out in the appended independent claims. An object
of embodiments herein is to improve on systems for transmitting information to the
public and to provide a more robust public information system with improved resilience
and robustness. According to a first aspect, there is disclosed a method for a public
information system, adapted for broadcasting a message in a first wireless access
network. The first wireless access network is arranged to, at least partly, overlap
one or more further wireless access networks. The method comprises initiating a modified
support announcement by the first wireless access network. The modified support announcement
is configured to announce support for the further wireless access networks by comprising
network identifiers associated with the further wireless access networks, whereby
a wireless device associated with a further wireless access network is prompted to
connect to the first wireless access network. The method also comprises initiating
broadcasting of the message over the first wireless access network, whereby said wireless
device may receive the message over the first wireless access network.
[0007] Thus, advantageously, wireless devices who are not listening to transmissions from
the first wireless access network normally is prompted to connect to the first wireless
access network, thinking that they are connecting to the further wireless access network
with which they are associated. This way the public information system may reach wireless
devices that are not normally associated with the first wireless access network via
the first wireless access network.
[0008] Advantageously, since the first wireless access network may be implemented in a more
robust and resilient manner than the one or more further wireless access networks,
robustness of the public information system is improved.
[0009] Advantageously, the disclosed public information system may reach an increased percentage
of the public, including members of the public that do not have access to traditional
broadcasting media such as television or public radio.
[0010] According to aspects, the method comprises obtaining an instruction to initiate broadcast
of the message to wireless devices associated with one or more of the further wireless
access networks.
[0011] Thus, there is provided a means for control and initiation of the public information
broadcasting.
[0012] According to aspects, the obtaining an instruction comprises obtaining network identifiers
corresponding to the further wireless access networks. This way the public information
system can identify relevant further wireless access networks and broadcast messages
to wireless devices in need of information which are associated with said further
wireless access networks.
[0013] According to aspects, the method comprises obtaining a notification of a malfunction
condition in one or more of the further wireless access networks. This way the public
information system becomes aware of malfunctioning further wireless access networks,
and can initiate broadcasting to wireless devices associated with such malfunctioning
wireless access networks.
[0014] According to aspects, the method comprises initiating selective barring of a wireless
device associated with a further wireless access network from accessing the first
wireless access network. A barred wireless device is prevented from using communications
resources of the first wireless access network. Thus, overloading the first wireless
access network by requests for service from the wireless devices associated with the
one or more further wireless access networks is prevented. Advantageously, the barring
is selective, meaning that certain wireless devices are barred and others not. This
way a given wireless device may be allowed access to the first wireless access network,
even though having no subscription to this network, while most wireless devices associated
with the one or more further wireless access networks are barred in order to prevent
overloading the first wireless access network.
[0015] According to aspects, the method comprises initiating broadcast of a notification
message comprising information about said modified support announcement to wireless
devices associated with the further wireless access networks.
[0016] This way users of the wireless devices that have received the modified support announcement
and have connected to the first wireless access network is notified of the fact, and
can also be made aware of certain changes in, e.g., service level obtained from the
first wireless access network compared to the further wireless access network.
[0017] According to aspects, the initiating broadcasting comprises selectively initiating
broadcasting in a part of the first wireless access network, whereby the message is
broadcasted in the part of the first wireless access network, and is not broadcasted
in another part of the first wireless access network.
[0018] Thus, broadcasting can be limited to a certain geographical area where the broadcasted
message is relevant. Thus, communications resources of the first wireless access network
are conserved, and the relevance of messages to recipients in a given geographical
area can be ensured.
[0019] According to aspects, the initiating a modified support announcement comprises initiating
broadcasting of a modified support announcement selectively in a part of the first
wireless access network, whereby the modified support announcement is broadcasted
in the part of the first wireless access network, and is not broadcasted in another
part of the first wireless access network. Thus, modified support announcement is
selectively transmitted to wireless devices located in a certain geographical area.
This way only relevant wireless devices are prompted to connect to the first wireless
access network, e.g., wireless devices that are in the geographical area to which
the broadcasted message pertains.
[0020] There is also disclosed herein a public information system control node arranged
to control a public information system adapted for broadcasting a message in a first
wireless access network. The first wireless access network is arranged to, at least
partly, overlap one or more further wireless access networks. The control node comprises
processing circuitry. The processing circuitry is configured to cause the control
node to initiate a modified support announcement by the first wireless access network.
This modified support announcement is configured to announce support for the further
wireless access networks by comprising network identifiers associated with the further
wireless access networks, whereby a wireless device associated with a further wireless
access network is prompted to connect to the first wireless access network, and to
initiate broadcasting of the message over the first wireless access network, whereby
said wireless device may receive the message over the first wireless access network.
[0021] There is furthermore disclosed a computer program for a control node arranged to
control a public information system adapted for broadcasting a message in a first
wireless access network. The first wireless access network is arranged to, at least
partly, overlap one or more further wireless access networks. The computer program
comprises computer code which, when run on processing circuitry of the control node,
causes the control node to initiate a modified support announcement by the first wireless
access network. The modified support announcement is configured to announce support
for the further wireless access networks by comprising network identifiers associated
with the further wireless access networks, whereby a wireless device associated with
a further wireless access network is prompted to connect to the first wireless access
network, and to initiate broadcasting of the message over the first wireless access
network, whereby said wireless device may receive the message over the first wireless
access network.
[0022] It is to be noted that any feature of the above discussed aspects may be applied
to any other aspect, wherever appropriate. Likewise, any advantage of the first aspect
may equally apply to the other aspects and vice versa. Other objectives, features
and advantages of the enclosed embodiments will be apparent from the following detailed
disclosure, from the attached dependent claims as well as from the drawings.
[0023] Generally, all terms used in the claims are to be interpreted per their ordinary
meaning in the technical field, unless explicitly defined otherwise herein. All references
to "a/an/the element, apparatus, component, means, step, etc." are to be interpreted
openly as referring to at least one instance of the element, apparatus, component,
means, step, etc., unless explicitly stated otherwise. The steps of any method disclosed
herein do not have to be performed in the exact order disclosed, unless explicitly
stated.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The inventive concept is now described, by way of example, with reference to the
accompanying drawings, in which:
Fig. 1 is a schematic diagram illustrating a communications system according to embodiments;
Figs. 2a, 2b, 2c illustrate an example sequence of events involving various wireless
access networks according to embodiments;
Figs. 3a, 3b illustrate an example sequence of events involving Long Term Evolution
(LTE) wireless access networks according to embodiments;
Fig. 4 illustrates an example LTE wireless access network according to embodiments;
Fig. 5 is a flowchart of methods according to embodiments;
Figs. 6,7 are signalling diagrams illustrating events according to embodiments;
Fig. 8 is a schematic diagram showing functional units of a control node according
to embodiments;
Fig. 9 schematically illustrates a computer program and a computer program product;
Fig. 10 is a schematic diagram showing modules of a control node according to embodiments;
Fig. 11 illustrates a SystemlnformationBlockType1 message format;
Fig. 12 illustrates a correspondence between a warning type value and a warning type.
DETAILED DESCRIPTION
[0025] The inventive concept will now be described more fully hereinafter with reference
to the accompanying drawings, in which certain embodiments of the inventive concept
are shown. This inventive concept may, however, be embodied in many different forms
and should not be construed as limited to the embodiments set forth herein; rather,
these embodiments are provided by way of example so that this disclosure will be thorough
and complete, and will fully convey the scope of the inventive concept to those skilled
in the art. Like numbers refer to like elements throughout the description. Any step
or feature illustrated by dashed lines should be regarded as optional.
[0026] Fig. 1 is a schematic diagram illustrating a communications system 100 where embodiments
presented herein can be applied. The communications system 100 is assumed to provide
a public information service to wireless devices 140, 141, by a public information
system 110. Message 111 illustrates the broadcast of information to wireless devices.
The public information system is, according to aspects, a public warning system, in
which case the message 111 comprises a warning or alert message.
[0027] It is appreciated that the information, warning, or alert message 111 can be delivered
in different formats depending on circumstances and network implementation. For instance,
according to various aspects, the message 111 comprises any of a text message, a voice
message, a Short Message Service (SMS), a tactile warning signal, or a general purpose
input signal to the wireless device, which general purpose input signal can be used
to trigger, e.g., a horn or warning light operatively connected to the wireless device.
[0028] It is furthermore appreciated that only a subset of message formats is supported
in the embodiments discussed in connection to Figs. 5-7.
[0029] The communications system 100 comprises a plurality of wireless access networks 120a,
120b, 130. Each wireless access network is illustrated by a single radio transceiver
in Fig. 1, but it is appreciated that, in general, a wireless access network comprises
a plurality of radio transceivers, or radio base stations.
[0030] Core networks 101a, 101b, 101c are operatively connected to respective wireless access
networks. The public information system 110 is shown in Fig. 1 to be operatively connected
to the wireless access networks via the core networks. However, according to some
aspects the public information system 110 can also be operatively connected directly
to the wireless access networks.
[0031] A wireless device is associated with one or more of the wireless access networks.
This means that the wireless device may connect to the wireless access network and
use communications resources of the wireless access network.
[0032] Examples of wireless devices 140, 141 include, but are not limited to, mobile stations,
mobile phones, handsets, wireless local loop phones, user equipment (UE), smartphones,
laptop computers, and tablet computers. Examples of wireless access network nodes
include, but are not limited to, radio base stations, base transceiver stations, node
Bs, evolved node Bs, and access points. The herein disclosed embodiments are not limited
to any particular number of wireless access networks or wireless devices.
[0033] Figs 2a-2c illustrate a communication system 200. Figs 2a-2c show a first wireless
access network 130, here illustrated as a Public Safety (PS) network. The PS network
is part of a Public Land Mobile Network (PLMN) for Public Safety, here shown as a
PLMN PS network. Normally, wireless devices 141 associated with various public services
such as police, medical emergency services, and fire brigade, use the PS network for
communications purposes.
[0034] There are also shown three further wireless access networks 120a, 120b, 120c. These
are PLMNs operated by Mobile Network Operators (MNOs) Operator A, Operator B, and
Operator C, respectively. Of course, one MNO may operate one or more wireless access
networks. These networks serve wireless devices associated with the respective networks.
Here, 'associated with' can mean, e.g., that the different wireless devices have Subscriber
Identity Modules (SIMs) associated with the different operators. Herein, in general,
'associated with' can also mean that the wireless devices are in possession of an
access code or other identification means allowing access to the different networks.
[0035] The first wireless access network is arranged to at least partly overlap one or more
of the further wireless access networks. This means that one or more of the wireless
devices connected to a further wireless access network is in radio range also of the
first wireless access network. It is appreciated that the overlap relates to at least
partly overlapping radio coverage areas between the first wireless access network
and the one or more further wireless access networks.
[0036] In Fig. 2a operation is normal. The wireless devices 140, 141 are connected to the
wireless access networks with which they are associated, shown by black arrows. Note
also the roamer from another country on the far right. This wireless device is indirectly
associated with Operator C according, e.g., to a roaming agreement between operator
C and the operator with which the wireless device is normally associated.
[0037] In Fig. 2b an event has occurred which prevents wireless devices from accessing the
wireless access networks 120a, 120b, 120c. For instance, an earthquake or wildfire
may have occurred, or a severe power outage. These events may prevent the radio access
nodes and/or backhaul networks from operating properly, which causes outage. In particular,
alert or warning messages may no longer be broadcasted over PLMN A, B, or C to wireless
devices 140.
[0038] However, the PS network is still operational, since this type of network is usually
implemented in a more robust and resilient manner than the normal commercial Mobile
Network Operator (MNO) networks. For instance, a PS network is likely to comprise
some measure of component redundancy in terms of, e.g., redundant radio base stations,
a more advanced back-up power source, and possibly also redundancy in terms of radio
base station coverage. So, while all three PLMNs A, B, and C are down, the PLMN PS
is still up and running and is providing service to connected wireless devices 141.
[0039] In Fig. 2c, the PS network first broadcasts a modified support announcement which
reaches the wireless devices associated with PLMN A, B, and C. This modified support
announcement advertises support not only for PLMN PS, but also for PLMN A, PLMN B,
and PLMN C. Since there is at least partial overlap between the different further
wireless access networks and the first wireless access network, some or all of the
wireless devices 140 associated with these PLMNs will hear the modified support announcement
from PLMN PS. They are thus prompted to connect to a cell belonging to PLMN PS even
though they are not associated with PLMN PS, i.e., the SIM is not a SIM for PLMN PS,
but for one of PLMN A, B, or C. Once connected to PLMN PS, wireless devices may receive
an information message that is broadcasted over PLMN PS.
[0040] Thus, advantageously, wireless devices who are not listening to transmissions from
PLMN PS in normal operation are prompted to connect to the PS network, thinking that
they are connecting to the wireless access network which they are associated with,
i.e., PLMN A, B, or C. This way a public information system may reach wireless devices
that are not normally associated with the first wireless access network via the first
wireless access network. Thus the coverage of the public information system is improved.
[0041] According to one aspect, there is a connection, illustrated by dashed lines 150a
and 150b in Fig. 1, from the PS network, or from the PS core network, to the core
network of one or more further wireless access networks. This way a public information
system may reach wireless devices that are not normally associated with the first
wireless access network via the first wireless access network, and wireless devices
that have been prompted to connect to the PS network may reach their respective PLMNs
via RAN sharing.
[0042] It is appreciated that Figs. 1 and 2 illustrate wireless access networks in general,
not necessarily associated with any specific telecommunications standard. The disclosed
concept is applicable in any type of network which provides a modified support announcement
functionality, and a broadcasting mechanism. Examples of where the disclosed technique
is applicable comprise, e.g., Global System for Mobile communications (GSM) networks,
Universal Mobile Telecommunications Service (UMTS), CDMA2000, WiMAX, Long Term Evolution
(LTE), fifth generation (5G) wireless access networks, and the various 802.11 wireless
local area network (WLAN) protocols.
[0043] It is appreciated that embodiments comprising an 802.11 wireless local area network
(WLAN) protocol advertise support, i.e., broadcast support announcements, using one
or more service set identifiers (SSID). This way, a function similar to announcing
support for multiple PLMN in RAN sharing is obtained.
[0044] Figs 3a, 3b illustrate a communication system 300. Figs. 3a and 3b illustrate an
example sequence of events in a public information system according to embodiments.
In this example the first and further wireless access networks 120a, 120b, 130 are
LTE networks. The networks are operatively connected to a public warning system (PWS)
110, which comprises a Cell Broadcast Entity (CBE), and a Cell Broadcast Center (CBC).
The PWS, CBE, and CBC are further discussed in Third Generation Partnership Project
(3GPP) texts TS 23.041 version 14.0.0. The PWS 110 is operatively connected at least
partly via interface SBc to respective Mobility Management Entities (MME) 250 of each
network. The MMEs are then operatively connected at least partly to eNodeBs 260 via
interface S1-MME. The eNodeBs are servicing wireless devices 140, 141.
[0045] When PLMN A 120a and PLMN B 120b are operational, they broadcast support announcements
prompting wireless devices associated with the respective PLMNs to attach to the respective
networks. In this case the PWS 110 may broadcast messages to wireless devices over
the different PLMNs in parallel, i.e., over PLMN A, PLMN B and over the PS-LTE to
the different wireless devices in the area.
[0046] In Fig. 3b, an event has occurred which is preventing some eNodeBs to service wireless
devices. This can for instance be due to a power outage at the eNodeB, or due to a
loss or malfunction in the backhaul interface S1-MME. Consequently, some wireless
devices cannot be reached from the PWS via the original eNodeB. For instance, wireless
device 410 that was previously served from eNodeB 310 can no longer be reached from
that radio base station 310. Thus, any information or alert messages broadcasted via
PLMN B will not reach all intended recipients.
[0047] In order to improve on the probability of delivery of broadcasted messages, the PS-LTE
network first broadcasts a modified support announcement. This support announcement
is a modified support announcement that comprises not only the identifier of the PS-LTE
network, but also comprises the identifier of one or more of the further wireless
networks PLMN A and PLMN B.
[0048] With respect to an LTE-based wireless access network, the modified support announcement
is comprised in the SystemInformationBlockType1 message, which is defined in Sec.
6.2.2 "Message definitions", of the 3GPP text TS 36.331 v14.0.0, and copied in below.
Parts relevant to the discussed wireless network identifiers are indicated by bold
and underlined text in Fig. 11.
[0049] Thus, according to some aspects, a network identity or network identifier comprises
a PLMN identity, PLMN ID, or PLMN-Identitylnfo.
[0050] To configure the modified support announcement in an LTE-based wireless access network,
the plmn-IdentityList field is modified to comprise the PLMN-Identity of the further
wireless access networks, i.e., PLMN A and PLMN B in this example.
[0051] It is appreciated that similar support announcements, having the function of announcing
support to wireless devices, are present in other wireless access network standards,
like 3GPP 2G and 3G systems.
[0052] With respect to a 2G GERAN-based wireless access network, the modified support announcement
is comprised in the System Information Type 22 message, which is defined in Sec. 10.5.2.37n
"SI 22 rest octets", of the 3GPP text TS 44.018 v13.3.2.
[0053] With respect to a 3G UTRAN-based wireless access network, the modified support announcement
is comprised in the MasterlnformationBlock message, which is defined in Sec. 11.3
"Information element definitions", of the 3GPP text TS 25.331 v14.0.0
[0054] As mentioned above, the first wireless access network can also be an 802.11 WLAN
family network. WLAN network broadcast support announcements using protocol service
set identifiers (SSID). Thus, according to some further aspects, a network identity
or network identifier comprises an 802.11 wireless local area network (WLAN) protocol
SSID.
[0055] 3GPP TS 23.251, v13.2.0, Section 4.2.2 "Broadcast system information for network
sharing" states that: If a shared Radio Access Network (RAN) is configured to indicate
available core network operators for selection by UEs, each cell in shared radio access
network shall in the broadcast system information include information concerning available
core network operators in the shared network.
[0056] The available core network operators shall be the same for all cells of a Location
Area in a shared UTRAN or GERAN network. The available core network operators shall
be the same for all cells of a Tracking Area in a shared E UTRAN network. A supporting
UE decodes the broadcast system information and takes the information concerning available
core network operators into account in network and cell (re-)selection procedures."
[0057] Thus, when a User Equipment (UE), or wireless device, such as wireless device 410,
receives said modified support announcement it is prompted to connect to the wireless
access network that made the support announcement, in this case the PS-LTE wireless
access network 130. Once the wireless device connects to the PS-LTE network, it can
start to receive broadcasts and other system information messages transmitted on this
network.
[0058] Thus, a broadcasted information message 111 reaches the wireless device 410 even
though this wireless device has no direct association to, or even knowledge of, the
PS-LTE network 130.
[0059] Fig. 4 illustrates a communications system 400. Fig. 4 illustrates an LTE network
where the eNB 410 is connected 420, 430 to MMEs 250a, 250b of PLMN A and PLMN B. These
connections enable RAN sharing, as defined and discussed in 3GPP TS 23.251 V13.2.0.
In this LTE network 400, wireless devices associated with one of the further wireless
access networks that are camping on the first wireless access network may access their
original core networks using RAN sharing.
[0060] Fig 5 describes different aspects of the methods that have been discussed above in
connection to the examples of Figs. 1-4. In particular, Fig. 5 illustrates a method
for a public information system 110, adapted for broadcasting a message 111 in a first
wireless access network 130. The first wireless access network is arranged to, at
least partly, overlap one or more further wireless access networks 120a, 120b. The
method comprises initiating a modified support announcement S104 by the first wireless
access network 130. The modified support announcement is configured to announce support
for the further wireless access networks 120a, 120b by comprising network identifiers
associated with the further wireless access networks, whereby a wireless device 140
associated with a further wireless access network 120a, 120b is prompted to connect
to the first wireless access network 130. The method also comprises initiating broadcasting
S108 of the message over the first wireless access network 130, whereby said wireless
device 140 may receive the message over the first wireless access network.
[0061] The mechanisms of said modified support announcement have been discussed above in
connection to Figs. 1-4. Herein, 'initiating' is to be construed as any action leading
to the execution of a modified support announcement or broadcasting as discussed above.
[0062] It is appreciated that the wireless device 140 does not necessarily know that it
is connecting to a PS network different from the MNO PLMN, since the announced PLMN
identifier is the same.
[0063] The disclosed method may be implemented in various types of wireless access networks,
and may be used for different purposes, including public information and public warning,
for instance;
[0064] According to aspects, the public information system comprises a public warning system,
PWS, and the message comprises an alert message and/or a warning message.
[0065] According to aspects, the first wireless access network 130 is a public safety network,
and a further wireless access network 120a, 120b is a commercial network separate
from the public safety network.
[0066] According to aspects, the first wireless access network 130 is part of a Public Safety,
PS, long term evolution, LTE, communication system.
[0067] According to aspects, one of the further wireless access networks 120a, 120b is a
Public Land Mobile Network (PLMN), associated with a Mobile Network Operator (MNO).
[0068] It is appreciated that the modified support announcement may be broadcasted even
though one or more of the further wireless networks are fully operational.
[0069] One way to start the process is to transmit an instruction to the public information
system. According to aspects, the method further comprises obtaining an instruction
S102 to initiate broadcast of the message to wireless devices 140 associated with
one or more of the further wireless access networks 120a, 120b.
[0070] Said instruction may be received by the public warning interface from a controlling
authority of the public information system.
[0071] According to aspects, the obtaining an instruction comprises obtaining network identifiers
corresponding to the further wireless access networks 120a, 120b. Thus, having regard
to the network identifiers of the further wireless access networks, the relevant modifications
can be made in the modified support announcement to announce support also for the
further wireless access networks in the modified support announcement broadcasted
by the first wireless access network.
[0072] According to aspects, the obtaining an instruction comprises receiving the message
to broadcast. This way, a command may be received by the public information system
to broadcast a given message to wireless devices associated with the one or more further
wireless access networks.
[0073] According to aspects, the obtaining an instruction comprises obtaining an instruction
to broadcast the message to one or more wireless devices 140 associated with a pre-configured
list of further wireless access networks 120a, 120b.
[0074] According to aspects, the method further comprises obtaining a notification S103
of a malfunction condition in one or more of the further wireless access networks
120a, 120b. This way, the public information system knows which further wireless access
networks that are no longer capable of delivering broadcasted messages to associated
wireless devices. The public information system may then announce support for such
further wireless access networks in order to improve on the probability that important
broadcast messages are received also by the wireless devices that are associated with
malfunctioning networks.
[0075] According to aspects, the obtaining a notification comprises obtaining a list of
network identifiers corresponding to the further wireless access networks 120a, 120b
associated with malfunction condition.
[0076] According to aspects, the initiating a modified support announcement comprises initiating
a modification of a System Information Block type 1, SIB1, of the first wireless access
network to comprise a network identity list corresponding to the one or more further
wireless access networks. The modification of a SIB1 was discussed above.
[0077] According to aspects, the initiating a modified support announcement comprises initiating
activation of a network sharing function, or Radio Access Network, RAN, sharing function.
RAN sharing function is defined and discussed in 3GPP text TS 23.251 V13.2.0.
[0078] According to aspects, the method further comprises initiating selective barring S106
of a wireless device 140 associated with a further wireless access network from accessing
the first wireless access network 130. Selective barring is discussed in 3GPP texts
TS 22.011 v14.3.0 and TS 36.331 v14.0.0 under the reference Extended Access Barring.
[0079] According to aspects, the first wireless access network has access to a list of identities
of wireless devices which should be given access to the first wireless access network,
i.e., not barred, while wireless devices not on the list are barred. For instance
the list may be a list of International Mobile Equipment Identity numbers (IMEI) available
to the PS-LTE and corresponding to select wireless devices. If such a wireless device
is prompted to camp on the PS-LTE, they can be given access to the first wireless
access network.
[0080] According to aspects, the selective barring comprises initiating a PLMN specific
access class barring using SIB2 and/or SIB14. It is appreciated that both SIB2 and/or
SIB14 can be used. SIB2 is used to bar "normal" UEs and wireless devices while SIB14
is used to bar "EAB capable", i.e., devices adapted for operating as Internet of Things,
loT, devices.
[0081] According to aspects, the selective barring comprises initiating a service class
specific barring. This service class specific barring is, according to some aspects,
configured to allow wireless devices camping on the first wireless access network
to access a subset of communications services, while being barred from other communications
services. In one exemplary embodiment, a selectively barred wireless device camping
on the first wireless access network is allowed to place an emergency call via the
first wireless access network, but is barred from calling other numbers. In one exemplary
embodiment, a wireless device is allowed to access certain network resources, such
as Internet web-pages associated with public service organizations, via the first
wireless access network, while being barred from other Internet web-pages.
[0082] According to an exemplary embodiment, a wireless device under selective barring will
receive a warning message on a web-page when requesting access to any web-page. For
instance, if a selectively barred wireless device requests a webpage of a search tool,
the wireless device will display the webpage with the warning message instead of the
webpage of the search tool.
[0083] According to aspects, the method further comprises initiating broadcast of a notification
message S107 comprising information about said modified support announcement to wireless
devices 140 associated with the further wireless access networks 120a, 120b.
[0084] In one example embodiment a bit in the Warning-Type, TS 36.331 v14.0.0, TS 23.041
v13.2.0 (e.g. 10000000 to 1000100 from the "Reserved for future use" range) is set
in order to indicate that a given message comes from a network where the UE is not
allowed to attach. Fig. 12 illustrates correspondence between Warning typeValue and
Warning type.
[0085] According to aspects, the initiating broadcasting comprises initiating transmission
of a Public Warning Message, PWM, using any of SIB10, SIB11, and SIB12 to wireless
devices 140 associated with the further wireless access networks 120a, 120b.
[0086] It is appreciated that these SIBs are alternatives. There are multiple PWS solutions
for different markets, e.g., the Earthquake and Tsunami Warning System (ETWS), the
Commercial Mobile Telephone Alerts system (CMAS), the Wireless Emergency Alerts system
(WEA), and the Korean Public Alert System (KPAS), see, 3GPP TS 23.041, v14.0.0.
[0087] According to aspects, the initiating broadcasting comprises initiating broadcasting
only when a further wireless access network is in a malfunction condition, or has
reported a malfunction condition.
[0088] According to aspects, the initiating broadcasting is preceded by a pre-configured
time delay, during which pre-configured time delay a wireless device 140 may connect
to the first wireless access network 130.
[0089] According to aspects, the initiating broadcasting comprises selectively initiating
broadcasting in a part of the first wireless access network, whereby the message is
broadcasted in the part of the first wireless access network, and is not broadcasted
in another part of the first wireless access network. Thus, broadcasting can be limited
to a certain geographical area where the broadcasted message is relevant. Thus, communications
resources of the first wireless access network are conserved, and the relevance of
messages to recipients in a given geographical area can be ensured.
[0090] According to aspects, the initiating a modified support announcement comprises initiating
broadcasting of a modified support announcement selectively in a part of the first
wireless access network, whereby the modified support announcement is broadcasted
in the part of the first wireless access network, and is not broadcasted in another
part of the first wireless access network.
[0091] Thus, modified support announcement is selectively transmitted to wireless devices
located in a certain geographical area. This way only relevant wireless devices are
prompted to connect to the first wireless access network, e.g., wireless devices that
are in the geographical area to which the broadcasted message pertains.
[0092] Fig. 6 is a signalling diagram illustrating interactions in a wireless communications
system according to embodiments of the methods discussed in connection with Fig. 5
above. The method illustrated in Fig. 6 comprises interactions between a public warning
system (PWS) control node 110, an MME 250, an eNodeB, or eNB 260, and a wireless device
140. The PWS optionally obtains an instruction or notification which prompts the PWS
control node to initiate broadcast of a message to one or more wireless devices. This
message can be an alert or warning message, or an information message of more general
nature. The PWS control node initiates broadcasting of a modified support announcement,
S104. The modified support announcement is configured to announce support for at least
one further wireless access network. This initiation is performed by communicating
with the eNB 260 using an O&M interface. This communication comprises, e.g., configuring
the one or more additional PLMN identifiers for which support should be announced
by the first wireless access network. The eNB 260 then optionally establishes a connection
to a core network of the further wireless access network using the S1 setup procedure
as defined in TS 36.413, v14.0.0, Sec. 8.7.3. Following configuration, the eNB then
broadcasts the modified support announcement. Optionally, the PWS control node 110
also initiates selective barring, S106, of one or more wireless devices, as discussed
above. This initiation is communicated to the eNB via en O&M interface, which eNB
broadcasts the selective barring to the wireless device.
[0093] Wireless device 140 receives the broadcast of the modified support announcement from
the eNB, an optionally also receives the selective barring broadcast. The broadcasted
modified support announcement allows the wireless device to camp on the eNB 260.
[0094] The PWS control node, after an optional configurable or pre-configured delay, then
initiates broadcast, S108. This initiation is performed by communicating with the
MME, using the SBc interface, as specified in TS 23.041, v14.0.0 Sec. 9.1.3, which
MME then configures the eNB for broadcasting the message 111. Thus, the communication
and configuration comprises, e.g., configuring the message 111 to broadcast and other
broadcasting parameters. Following configuration, the eNB broadcasts the message,
which can be received by the wireless device due to camping on the cell, enabled via
the modified support announcement.
[0095] Optionally, the PWS control node may initiate a notification broadcast S107. This
initiation comprises communication with the MME 250 in order to configure a notification
broadcast. Following the configuration, the eNB 260 broadcasts the notification message
to the wireless device. The notification message may, e.g., comprise information about
the modified support announcement, and thus notify the wireless device that it is
now served by the first wireless access system and that it may experience a different
level of service. For instance, the notification message may comprise information
notifying that no outbound calls may be placed, but that waning and alert messages
will be received. In one example embodiment, described above, the initiating notification
broadcast is comprised in S108. The broadcast here includes a warning type and the
warning type would have the most significant bit (MSB) set to 1 to inform about reduced
or changed level of service.
[0096] Optionally, the PWS control node may initiate a broadcast repetition. This procedure
follows the same steps as the original broadcast initiation. The purpose of the repetition
broadcast can be, e.g., to improve on delivery probability of an important message
to wireless devices.
[0097] Fig. 7 is a signalling diagram illustrating an example sequence of events in a public
information system according to embodiments. This example shows interactions between
a PLMN of some MNO, 120a, 120b, a PS-LTE network 130, and a wireless device 140 associated
with the MNO.
[0098] The wireless device is initially connected to the PLMN of the MNO 120a, 120b. Then
some event occurs, e.g., an earthquake, a tsunami, or some other event which causes
a loss of service and a malfunction condition at the MNO PLMN. Consequently, the wireless
device loses its network connection due to the malfunction condition.
[0099] The MNO PLMN, or a control node comprised in the MNO PLMN, notifies the PS-LTE network
130, or a control node comprised in the PS-LTE network. The PS-LTE network then announces
support for the PLMN via SIB1. The PS-LTE network also optionally broadcasts a selective
barring message via SIB2 and/or SIB14.
[0100] It is appreciated that the malfunction notification may also come from an external
control node separate from MNO PLMN.
[0101] The modified support announcement by the PS-LTE network enables the wireless device
to camp on the PS-LTE network instead of the malfunctioning MNO PLMN. The PS-LTE network,
or a PWS operatively connected to the PS-LTE network can now reach the wireless device
140 with broadcasts.
[0102] Thus, a PWS message broadcast may be transmitted to the wireless device 140 using
SIB 10 or SIB 11 or SIB 12.
[0103] It is appreciated that the wireless device 140 does not necessarily know that it
is connecting to a PS-LTE network different from the MNO PLMN, since the announced
PLMN identifier is the same.
[0104] This procedure results in that a PWS warning message is received by the wireless
device, regardless of the operating condition of the PLMN of the MNO to which the
wireless device is associated normally.
[0105] Fig. 8 is a schematic diagram showing functional units of a control node 810 according
to embodiments;
[0106] Fig. 8 schematically illustrates, in terms of a number of functional units, the components
of a control node 810 according to embodiments. Processing circuitry 820 is provided
using any combination of one or more of a suitable central processing unit (CPU),
multiprocessor, microcontroller, digital signal processor (DSP), etc., capable of
executing software instructions stored in a computer program product (as in Fig. 9),
e.g. in the form of a storage medium 840. The processing circuitry 820 may further
be provided as at least one application specific integrated circuit (ASIC), or field
programmable gate array (FPGA).
[0107] Particularly, the processing circuitry 820 is configured to cause the control node
810 to perform a set of operations, or steps, S102-S108, as disclosed above in connection
to Fig. 5. For example, the storage medium 840 may store the set of operations, and
the processing circuitry 820 may be configured to retrieve the set of operations from
the storage medium to cause the control node 810 to perform the set of operations.
The set of operations may be provided as a set of executable instructions. Thus the
processing circuitry is thereby arranged to execute methods as herein disclosed.
[0108] The storage medium 840 may also comprise persistent storage, which, for example,
can be any single one or combination of magnetic memory, optical memory, solid state
memory or even remotely mounted memory.
[0109] The control node 810 may further comprise a communications interface 830 for communications
at least with the control node. As such the communications interface may comprise
one or more transmitters and receivers, comprising analogue and digital components.
[0110] The processing circuitry 820 controls the general operation of the control node 810
e.g. by sending data and control signals to the communications interface 830 and the
storage medium 840, by receiving data and reports from the communications interface
830, and by retrieving data and instructions from the storage medium 840. Other components,
as well as the related functionality, of the control node 810 are omitted in order
not to obscure the concepts presented herein.
[0111] In other words, Fig. 8 illustrates a public information system control node 810 arranged
to control a public information system adapted for broadcasting a message in a first
wireless access network 130, the first wireless access network arranged to, at least
partly, overlap one or more further wireless access networks 120a, 120b, the control
node comprising processing circuitry 820, the processing circuitry being configured
to cause the control node to initiate a modified support announcement by the first
wireless access network 130, the modified support announcement configured to announce
support for the further wireless access networks 120a, 120b by comprising network
identifiers associated with the further wireless access networks, whereby a wireless
device 140 associated with a further wireless access network 120a, 120b is prompted
to connect to the first wireless access network 130, and to initiate broadcasting
of the message over the first wireless access network 130, whereby said wireless device
140 may receive the message over the first wireless access network.
[0112] According to aspects, the control node comprises a communications interface 830 connected
to the processing circuitry and configured to obtain an instruction to initiate broadcast
of the message to wireless devices associated with the one or more further wireless
access networks.
[0113] According to aspects, the communications interface 830 is further configured to obtain
a notification of a malfunction in one or more further wireless access networks.
[0114] Fig. 9 schematically illustrates one example of a computer program 910 and a computer
program product 930 comprising computer readable means 920. On this computer readable
means, a computer program can be stored, which computer program can cause processing
circuitry and thereto operatively coupled entities and devices, such as a communications
interface and a storage medium, to execute methods according to embodiments described
herein. The computer program and/or computer program product may thus provide means
for performing any steps of the methods disclosed herein.
[0115] In particular, the computer program and/or computer program product may thus provide
means for performing a computer program 910 for a control node 810 arranged to control
a public information system adapted for broadcasting a message in a first wireless
access network 130. The first wireless access network is arranged to, at least partly,
overlap one or more further wireless access networks 120a, 120b. The computer program
comprising computer code which, when run on processing circuitry 820 of the control
node 810, causes the control node to initiate a modified support announcement by the
first wireless access network 130. The modified support announcement being configured
to announce support for the further wireless access networks 120a, 120b by comprising
network identifiers associated with the further wireless access networks, whereby
a wireless device 140 associated with a further wireless access network 120a, 120b
is prompted to connect to the first wireless access network 130, and to initiate broadcasting
of the message over the first wireless access network 130, whereby said wireless device
140 may receive the message over the first wireless access network.
[0116] Fig. 10 schematically illustrates, in terms of a number of functional modules, the
components of a control node according to an embodiment. The control node 1010 of
Fig. 10 comprises a number of functional modules; an initiate modified support announcement
module Sx104 configured to perform step S104, and an initiate broadcast module Sx108
configured to perform step S108.
[0117] With reference to the methods illustrated in Fig. 5, the control node 1010 of Fig.
10 may further comprise a number of optional functional modules, such as any of an
obtain instruction module Sx102 configured to perform step S102, a further obtain
notification module Sx103 configured to perform step S103, and an initiate selective
barring module Sx106 configured to perform step S106.
[0118] In general terms, each functional module of Fig. 10 may be implemented in hardware
or in software. Preferably, one or more or all functional modules may be implemented
by the processing circuitry 820 of the control node 810, possibly in cooperation with
functional units 830 and 840. The processing circuitry 820 may thus be arranged to,
from the storage medium 840, fetch instructions as provided by a functional module
and to execute these instructions, thereby performing any steps of the control node
and methods as disclosed herein.
[0119] In general terms, each functional module may in one embodiment be implemented only
in hardware or and in another embodiment with the help of software, i.e., the latter
embodiment having computer program instructions stored on the storage medium which
when run on the processing circuitry makes the control node perform the corresponding
steps mentioned above. It should also be mentioned that even though the modules correspond
to parts of a computer program, they do not need to be separate modules therein, but
the way in which they are implemented in software is dependent on the programming
language used. The control node810 may be provided as a standalone device or as a
part of at least one further device. For example, the control node may be hosted by,
provided in, or installed on a node of a wireless access network or a core network.
[0120] Fig. 10 is a schematic diagram showing modules of a control node according to embodiments.
In particular, there is illustrated a public information system control node 1010
arranged to control a public information system adapted for broadcasting a message
in a first wireless access network 130. The first wireless access network is arranged
to, at least partly, overlap one or more further wireless access networks 120a, 120b.
The control node comprises a first module Sx104 configured to initiate a modified
support announcement by the first wireless access network 130, the modified support
announcement configured to announce support for the further wireless access networks
120a, 120b by comprising network identifiers associated with the further wireless
access networks, whereby a wireless device 140 associated with a further wireless
access network 120a, 120b is prompted to connect to the first wireless access network
130, and a second module Sx108 configured to initiate broadcasting of the message
over the first wireless access network 130, whereby said wireless device 140 may receive
the message over the first wireless access network.
[0121] According to aspects, the control node comprises a third module Sx102 configured
to obtain an instruction to initiate broadcast of the message to wireless devices
associated with the one or more further wireless access networks.
[0122] According to aspects, the control node comprises a fourth module Sx103 configured
to obtain a notification of a malfunction in one or more further wireless access networks.
[0123] According to aspects, the control node comprises a fifth module Sx106 configured
to selectively bar a wireless device associated with a further wireless access network
from accessing the first wireless access network 130.
1. A method for a public information system (110), adapted for broadcasting a message
(111) in a first wireless access network (130) that is a public safety network, the
first wireless access network arranged to, at least partly, overlap one or more further
wireless access networks (120a, 120b) that is a commercial network being separated
from the public safety network, the method being performed in a public information
system control node (810) comprises;
initiating a modified support announcement (S104) by the first wireless access network
(130), the modified support announcement configured to announce support for the further
wireless access networks (120a, 120b) by comprising network identifiers associated
with the further wireless access networks, whereby a wireless device (140) associated
with the further wireless access network (120a, 120b) is prompted to connect to the
first wireless access network (130), and
initiating broadcasting (S108) of the message over the first wireless access network
(130), whereby said wireless device (140) may receive the message over the first wireless
access network.
2. The method according to claim 1, wherein the public information system comprises a
public warning system, PWS, and wherein the message comprises an alert message and/or
a warning message.
3. The method according to any preceding claim, wherein the first wireless access network
(130) is part of a Public Safety, PS, long term evolution, LTE, communication system.
4. The method according to any preceding claim, wherein one of the further wireless access
networks (120a, 120b) is a Public Land Mobile Network, PLMN, associated with a Mobile
Network Operator, MNO.
5. The method according to any preceding claim , further comprising obtaining an instruction
(S102) to initiate broadcast of the message to wireless devices (140) associated with
one or more of the further wireless access networks (120a, 120b).
6. The method according to claim 5, wherein the obtaining an instruction comprises obtaining
network identifiers corresponding to the further wireless access networks (120a, 120b).
7. The method according to any of claims 5-6, wherein the obtaining an instruction comprises
receiving the message to broadcast.
8. The method according to any of claims 5-7, wherein the obtaining an instruction comprises
obtaining an instruction to broadcast the message to one or more wireless devices
(140) associated with a pre-configured list of further wireless access networks (120a,
120b).
9. The method according to any preceding claim, further comprising obtaining a notification
(S103) of a malfunction condition in one or more of the further wireless access networks
(120a, 120b).
10. The method according to claim 9, wherein the obtaining a notification comprises obtaining
a list of network identifiers corresponding to the further wireless access networks
(120a, 120b) associated with malfunction condition.
11. The method according to any preceding claim, wherein the initiating a modified support
announcement comprises initiating a modification of a System Information Block type
1, SIB1, of the first wireless access network to comprise a network identity list
corresponding to the one or more further wireless access networks.
12. The method according to any preceding claim, wherein a network identity comprises
a PLMN identity, PLMN ID, or a service set identifier, SSID.
13. The method according to any preceding claim, wherein the initiating a modified support
announcement comprises initiating activation of a network sharing function, or Radio
Access Network, RAN, sharing function.
14. The method according to any preceding claim, further comprising initiating selective
barring (S106) of a wireless device (140) associated with a further wireless access
network from accessing the first wireless access network (130).
15. The method according to claim 14, wherein the selective barring comprises initiating
a PLMN specific access class barring using SIB2 and/or SIB14.
16. The method according to any preceding claim, further comprising initiating broadcast
of a notification message (S107) comprising information about said modified support
announcement to wireless devices (140) associated with the further wireless access
networks (120a, 120b).
17. The method according to any preceding claim, wherein the initiating broadcasting comprises
initiating transmission of a Public Warning Message, PWM, using any of SIB10, SIB11,
and SIB12 to wireless devices (140) associated with the further wireless access networks
(120a, 120b).
18. The method according to any preceding claim, wherein the initiating broadcasting comprises
initiating broadcasting only when a further wireless access network is in, or has
reported, a malfunction condition.
19. The method according to any preceding claim, wherein the initiating broadcasting is
preceded by a pre-configured time delay, during which pre-configured time delay a
wireless device (140) may connect to the first wireless access network (130).
20. The method according to any preceding claim, wherein the initiating broadcasting comprises
selectively initiating broadcasting in a part of the first wireless access network,
whereby the message is broadcasted in the part of the first wireless access network,
and is not broadcasted in another part of the first wireless access network.
21. The method according to any preceding claim, wherein the initiating a modified support
announcement comprises initiating broadcasting of a modified support announcement
selectively in a part of the first wireless access network, whereby the modified support
announcement is broadcasted in the part of the first wireless access network, and
is not broadcasted in another part of the first wireless access network.
22. A public information system control node (810) arranged to control a public information
system (110) adapted for broadcasting a message in a first wireless access network
(130) that is a public safety network, the first wireless access network arranged
to, at least partly, overlap one or more further wireless access networks (120a, 120b)
that is a commercial network being separated from the public safety network, the control
node comprising processing circuitry (920), the processing circuitry being configured
to cause the control node to;
initiate a modified support announcement by the first wireless access network (130),
the modified support announcement configured to announce support for the further wireless
access networks (120a, 120b) by comprising network identifiers associated with the
further wireless access networks, whereby a wireless device (140) associated with
a further wireless access network (120a, 120b) is prompted to connect to the first
wireless access network (130), and to
initiate broadcasting of the message over the first wireless access network (130),
whereby said wireless device (140) may receive the message over the first wireless
access network.
23. The control node according to claim 22, comprising a communications interface (830)
connected to the processing circuitry and configured to obtain an instruction to initiate
broadcast of the message to wireless devices associated with the one or more further
wireless access networks.
24. The control node according to claim 22 or 23, wherein the communications interface
(830) is further configured to obtain a notification of a malfunction in one or more
further wireless access networks.
1. Verfahren für ein öffentliches Informationssystem (110), das zum Verbreiten einer
Nachricht (111) in einem ersten Drahtloszugriffsnetzwerk (130), das ein öffentliches
Sicherheitsnetzwerk ist, angepasst ist, wobei das erste Drahtloszugriffsnetzwerk eingerichtet
ist, mindestens teilweise mit einem oder mehreren weiteren Drahtloszugangsnetzwerken
(120a, 120b) zu überlappen, die ein kommerzielles Netzwerk sind, das von dem öffentlichen
Sicherheitsnetzwerk getrennt ist, wobei das Verfahren, das in einem öffentlichen Informationssystemsteuerungsknoten
(810) durchgeführt wird, umfasst;
Einleiten einer modifizierten Unterstützungsankündigung (S104) durch das erste Drahtloszugriffsnetzwerk
(130), wobei die modifizierte Unterstützungsankündigung konfiguriert ist, Unterstützung
für die weiteren Drahtloszugriffsnetzwerke (120a, 120b) anzukündigen, indem sie Netzwerkkennungen
umfasst, die mit den weiteren Drahtloszugriffsnetzwerken verknüpft sind, wobei eine
drahtlose Vorrichtung (140), die mit dem weiteren Drahtloszugriffsnetzwerk (120a,
120b) verknüpft ist, aufgefordert wird, sich mit dem ersten Drahtloszugriffsnetzwerk
(130) zu verbinden, und
Einleiten eines Verteilens (S108) der Nachricht über das erste Drahtloszugriffsnetzwerk
(130), wobei die drahtlose Vorrichtung (140) die Nachricht über das erste Drahtloszugriffsnetzwerk
empfangen kann.
2. Verfahren nach Anspruch 1, wobei das öffentliche Informationssystem ein öffentliches
Warnsystem, PWS, umfasst und wobei die Nachricht eine Alarmierungsnachricht und/oder
eine Warnungsnachricht umfasst.
3. Verfahren nach einem der vorstehenden Ansprüche, wobei das erste Drahtloszugriffsnetzwerk
(130) Teil eines öffentlichen Sicherheits-, PS, Long-Term-Evolution-, LTE, Kommunikationssystems
ist.
4. Verfahren nach einem der vorstehenden Ansprüche, wobei eines der weiteren Drahtloszugriffsnetzwerke
(120a, 120b) ein öffentliches terrestrisches Mobilfunknetz, PLMN, ist, das mit einem
Mobilnetzbetreiber, MNO, verknüpft ist.
5. Verfahren nach einem der vorstehenden Ansprüche, weiter umfassend Erhalten einer Anweisung
(S102), Verteilung der Nachricht an drahtlose Vorrichtungen (140) einzuleiten, die
mit einem oder mehreren der weiteren Drahtloszugriffsnetzwerke (120a, 120b) verknüpft
sind.
6. Verfahren nach Anspruch 5, wobei das Erhalten einer Anweisung umfasst, Netzwerkkennungen
entsprechend den weiteren Drahtloszugriffsnetzwerken (120a, 120b) zu erhalten.
7. Verfahren nach einem der Ansprüche 5-6, wobei das Erhalten einer Anweisung umfasst,
die zu verteilende Nachricht zu empfangen.
8. Verfahren nach einem der Ansprüche 5-7, wobei das Erhalten einer Anweisung umfasst,
eine Anweisung zu erhalten, die Nachricht an eine oder mehrere drahtlose Vorrichtungen
(140) zu verteilen, die mit einer vorkonfigurierten Liste weiterer Drahtloszugriffsnetzwerke
(120a, 120b) verknüpft sind.
9. Verfahren nach einem der vorstehenden Ansprüche, weiter umfassend Erhalten einer Benachrichtigung
(S103) über einen Fehlfunktionszustand in einem oder mehreren der weiteren Drahtloszugriffsnetzwerke
(120a, 120b).
10. Verfahren nach Anspruch 9, wobei das Erhalten einer Benachrichtigung umfasst, eine
Liste von Netzwerkkennungen entsprechend den weiteren Drahtloszugriffsnetzwerken (120a,
120b) zu erhalten, die mit einem Fehlfunktionszustand verknüpft sind.
11. Verfahren nach einem der vorstehenden Ansprüche, wobei das Einleiten einer modifizierten
Unterstützungsankündigung umfasst, eine Modifikation eines Systeminformationsblocks
Typ 1, SIB1, des ersten Drahtloszugriffsnetzwerks einzuleiten, um eine Netzwerkidentitätsliste
entsprechend dem einen oder den mehreren weiteren Drahtloszugriffsnetzwerken zu umfassen.
12. Verfahren nach einem der vorstehenden Ansprüche, wobei eine Netzwerkidentität eine
PLMN-Identität, PLMN ID, oder einen Service Set Identifier, SSID, umfasst.
13. Verfahren nach einem der vorstehenden Ansprüche, wobei das Einleiten einer modifizierten
Unterstützungsankündigung umfasst, Aktivierung einer Netzwerkteilungsfunktion, oder
Funkzugriffsnetzwerk-, RAN, -Teilungsfunktion einzuleiten.
14. Verfahren nach einem der vorstehenden Ansprüche, weiter umfassend Einleiten von selektivem
Ausschließen (S106) einer drahtlosen Vorrichtung (140), die mit einem weiteren Drahtloszugriffsnetzwerk
verknüpft ist, von einem Zugriff auf das erste Drahtloszugriffsnetzwerk (130).
15. Verfahren nach Anspruch 14, wobei das selektive Ausschließen umfasst, einen PLMN-spezifischen
Zugriffsklassenausschluss unter Verwendung von SIB2 und/oder SIB14 einzuleiten.
16. Verfahren nach einem der vorstehenden Ansprüche, weiter umfassend Einleiten eines
Verteilens einer Benachrichtigungsnachricht (S107), die Informationen über die modifizierte
Unterstützungsankündigung umfasst, an drahtlose Vorrichtungen (140), die mit den weiteren
Drahtloszugriffsnetzwerken (120a, 120b) verknüpft sind.
17. Verfahren nach einem der vorstehenden Ansprüche, wobei das Einleiten eines Verteilens
umfasst, Übertragung einer öffentlichen Warnnachricht, PWM, unter Verwendung von SIB10,
SIB11 und SIB12 an drahtlose Vorrichtungen (140) einzuleiten, die mit den weiteren
Drahtloszugriffsnetzwerken (120a, 120b) verknüpft sind.
18. Verfahren nach einem der vorstehenden Ansprüche, wobei das Einleiten eines Verteilens
umfasst, Verteilen nur dann einzuleiten, wenn ein weiteres drahtloses Netzwerk in
einem Fehlfunktionszustand ist oder einen gemeldet hat.
19. Verfahren nach einem der vorstehenden Ansprüche, wobei dem Einleiten eines Verteilens
eine vorkonfigurierte Zeitverzögerung vorangeht, während welcher Zeitverzögerung eine
drahtlose Vorrichtung (140) sich mit dem ersten Drahtloszugriffsnetzwerk (130) verbinden
kann.
20. Verfahren nach einem der vorstehenden Ansprüche, wobei das Einleiten eines Verteilens
umfasst, Verteilen in einem Teil des ersten Drahtloszugriffsnetzwerks selektiv einzuleiten,
wobei die Nachricht in dem Teil des ersten Drahtloszugriffsnetzwerks verteilt wird
und nicht in einem anderen Teil des ersten Drahtloszugriffsnetzwerks verteilt wird.
21. Verfahren nach einem der vorstehenden Ansprüche, wobei das Einleiten einer modifizierten
Unterstützungsankündigung umfasst, Verteilen einer modifizierten Unterstützungsankündigung
in einem Teil des ersten Drahtloszugriffsnetzwerk selektiv einzuleiten, wobei die
modifizierte Unterstützungsankündigung in dem Teil des ersten Drahtloszugriffsnetzwerks
verteilt wird und nicht in einem anderen Teil des ersten Drahtloszugriffsnetzwerks
verteilt wird.
22. Öffentlicher Informationssystemsteuerknoten (810), der eingerichtet ist, ein öffentliches
Informationssystem (110) zu steuern, das zum Verteilen einer Nachricht in einem ersten
Drahtloszugriffsnetzwerk (130), das ein öffentliches Sicherheitsnetzwerk ist, angepasst
ist, wobei das erste Drahtloszugriffsnetzwerk eingerichtet ist, mindestens teilweise
ein oder mehrere weitere Drahtloszugriffsnetzwerke (120a, 120b) zu überlappen, die
ein kommerzielles Netzwerk sind, das von dem öffentlichen Sicherheitsnetzwerk getrennt
ist, wobei der Steuerknoten Verarbeitungsschaltkreise (920) umfasst, wobei die Verarbeitungsschaltkreise
konfiguriert sind, den Steuerknoten zu veranlassen zum;
Einleiten einer modifizierten Unterstützungsankündigung durch das erste Drahtloszugriffsnetzwerk
(130), wobei die modifizierte Unterstützungsankündigung konfiguriert ist, Unterstützung
für die weiteren Drahtloszugriffsnetzwerke (120a, 120b) anzukündigen, indem sie Netzwerkkennungen
umfasst, die mit den weiteren Drahtloszugriffsnetzwerken verknüpft sind, wobei eine
drahtlose Vorrichtung (140), die mit dem weiteren Drahtloszugriffsnetzwerk (120a,
120b) verknüpft ist, aufgefordert wird, sich mit dem ersten Drahtloszugriffsnetzwerk
(130) zu verbinden, und
Einleiten eines Verteilens der Nachricht über das erste Drahtloszugriffsnetzwerk (130),
wobei die drahtlose Vorrichtung (140) die Nachricht über das erste Drahtloszugriffsnetzwerk
empfangen kann.
23. Steuerknoten nach Anspruch 22, umfassend eine Kommunikationsschnittstelle (830), die
mit den Verarbeitungsschaltkreisen verbunden ist und konfiguriert ist, eine Anweisung
zu erhalten, Verteilung der Nachricht an drahtlose Vorrichtungen einzuleiten, die
mit dem einen oder den mehreren Drahtloszugriffsnetzwerken verknüpft sind.
24. Steuerknoten nach Anspruch 22 oder 23, wobei die Kommunikationsschnittstelle (830)
weiter konfiguriert ist, eine Benachrichtigung über eine Fehlfunktion in einem oder
mehreren weiteren Drahtloszugriffsnetzwerken zu erhalten.
1. Procédé pour un système d'informations publiques (110), adapté pour diffuser un message
(111) dans un premier réseau d'accès sans fil (130) qui est un réseau de sécurité
publique, le premier réseau d'accès sans fil agencé pour, au moins partiellement,
chevaucher un ou plusieurs réseaux d'accès sans fil (120a, 120b) supplémentaires c'est-à-dire
un réseau commercial étant séparé du réseau de sécurité publique, le procédé étant
effectué dans un nœud de commande de système d'informations publiques (810) comprend
les étapes consistant à ;
initier une annonce de support modifiée (S104) par le premier réseau d'accès sans
fil (130), l'annonce de support modifiée configurée pour annoncer un support pour
les réseaux d'accès sans fil (120a, 120b) supplémentaires en comprenant des identificateurs
de réseau associés aux réseaux d'accès sans fil supplémentaires, selon lequel un dispositif
sans fil (140) associé au réseau d'accès sans fil (120a, 120b) supplémentaire est
invité à se connecter au premier réseau d'accès sans fil (130), et
initier la diffusion (S108) du message sur le premier réseau d'accès sans fil (130),
selon lequel ledit dispositif sans fil (140) peut recevoir le message sur le premier
réseau d'accès sans fil.
2. Procédé selon la revendication 1, dans lequel le système d'informations publiques
comprend un système d'avertissement public, PWS, et dans lequel le message comprend
un message d'alerte et/ou un message d'avertissement.
3. Procédé selon une quelconque revendication précédente, dans lequel le premier réseau
d'accès sans fil (130) fait partie d'un système de communication d'évolution à long
terme, LTE, de sécurité publique, PS.
4. Procédé selon une quelconque revendication précédente, dans lequel un des réseaux
d'accès sans fil (120a, 120b) supplémentaires est un réseau mobile terrestre public,
PLMN, associé à un opérateur de réseau mobile, MNO.
5. Procédé selon une quelconque revendication précédente, comprenant en outre l'obtention
d'une instruction (S102) pour initier la diffusion du message aux dispositifs sans
fil (140) associés à un ou plusieurs réseaux d'accès sans fil (120a, 120b) supplémentaires.
6. Procédé selon la revendication 5, dans lequel l'obtention d'une instruction comprend
l'obtention d'identificateurs de réseau correspondant aux réseaux d'accès sans fil
(120a, 120b) supplémentaires.
7. Procédé selon l'une quelconque des revendications 5-6, dans lequel l'obtention d'une
instruction comprend la réception du message à diffuser.
8. Procédé selon l'une quelconque des revendications 5 à 7, dans lequel l'obtention d'une
instruction comprend l'obtention d'une instruction de diffuser le message à un ou
plusieurs dispositifs sans fil (140) associés à une liste préconfigurée de réseaux
d'accès sans fil (120a, 120b) supplémentaires.
9. Procédé selon une quelconque revendication précédente, comprenant en outre l'obtention
d'une notification (S103) d'un état de dysfonctionnement dans un ou plusieurs des
réseaux d'accès sans fil (120a, 120b) supplémentaires.
10. Procédé selon la revendication 9, dans lequel l'obtention d'une notification comprend
l'obtention d'une liste d'identificateurs de réseau correspondant aux réseaux d'accès
sans fil (120a, 120b) supplémentaires associés à un état de dysfonctionnement.
11. Procédé selon une quelconque revendication précédente, dans lequel l'initiation d'une
annonce de support modifiée comprend l'initiation d'une modification d'un bloc d'informations
système de type 1, SIB1, du premier réseau d'accès sans fil pour comprendre une liste
d'identités de réseaux correspondant à l'un ou aux réseaux d'accès sans fil supplémentaires.
12. Procédé selon une quelconque revendication précédente, dans lequel une identité de
réseau comprend une identité PLMN, PLMN ID, ou un identificateur d'ensemble de services,
SSID.
13. Procédé selon une quelconque revendication précédente, dans lequel l'initiation d'une
annonce de support modifiée comprend l'initiation de l'activation d'une fonction de
partage de réseau, ou d'une fonction de partage de réseau d'accès radio, RAN.
14. Procédé selon une quelconque revendication précédente, comprenant en outre l'initiation
d'une interdiction sélective (S106) d'un dispositif sans fil (140) associé à un réseau
d'accès sans fil supplémentaire d'accéder au premier réseau d'accès sans fil (130).
15. Procédé selon la revendication 14, dans lequel l'interdiction sélective comprend l'initiation
d'une interdiction de classe d'accès spécifique à PLMN en utilisant SIB2 et/ou SIB14.
16. Procédé selon une quelconque revendication précédente, comprenant en outre l'initiation
de l'émission d'un message de notification (S107) comprenant des informations à propos
de ladite annonce de support modifiée à des dispositifs sans fil (140) associés aux
réseaux d'accès sans fil (120a, 120b) supplémentaires.
17. Procédé selon une quelconque revendication précédente, dans lequel l'initiation de
la diffusion comprend l'initiation de la transmission d'un message d'avertissement
public, PWM, en utilisant un quelconque parmi SIB10, SIB11 et SIB12 vers des dispositifs
sans fil (140) associés aux réseaux d'accès sans fil (120a, 120b) supplémentaires.
18. Procédé selon une quelconque revendication précédente, dans lequel l'initiation de
la diffusion comprend l'initiation de la diffusion uniquement lorsqu'un réseau d'accès
sans fil supplémentaire est dans, ou a signalé, un état de dysfonctionnement.
19. Procédé selon une quelconque revendication précédente, dans lequel l'initiation de
la diffusion est précédée d'un délai de temps préconfiguré, au cours duquel délai
de temps préconfiguré un dispositif sans fil (140) peut se connecter au premier réseau
d'accès sans fil (130).
20. Procédé selon une quelconque revendication précédente, dans lequel l'initiation de
la diffusion comprend l'initiation de la diffusion de manière sélective dans une partie
du premier réseau d'accès sans fil, selon lequel le message est diffusé dans la partie
du premier réseau d'accès sans fil, et n'est pas diffusé dans une autre partie du
premier réseau d'accès sans fil.
21. Procédé selon une quelconque revendication précédente, dans lequel l'initiation d'une
annonce de support modifiée comprend l'initiation de la diffusion d'une annonce de
support modifiée de manière sélective dans une partie du premier réseau d'accès sans
fil, selon lequel l'annonce de support modifiée est diffusée dans la partie du premier
réseau d'accès sans fil, et n'est pas diffusée dans une autre partie du premier réseau
d'accès sans fil.
22. Nœud de commande de système d'informations publiques (810) agencé pour commander un
système d'informations publiques (110) adapté pour diffuser un message dans un premier
réseau d'accès sans fil (130) qui est un réseau de sécurité publique, le premier réseau
d'accès sans fil agencé pour, au moins partiellement, chevaucher un ou plusieurs réseaux
d'accès sans fil (120a, 120b) supplémentaires c'est-à-dire un réseau commercial étant
séparé du réseau de sécurité publique, le nœud de commande comprenant un circuit de
traitement (920), le circuit de traitement étant configuré pour amener le nœud de
commande à ;
initier une annonce de support modifiée par le premier réseau d'accès sans fil (130),
l'annonce de support modifiée configurée pour annoncer un support pour les réseaux
d'accès sans fil (120a, 120b) supplémentaires en comprenant des identificateurs de
réseau associés aux réseaux d'accès sans fil supplémentaires, selon lequel un dispositif
sans fil (140) associé à un réseau d'accès sans fil (120a, 120b) supplémentaire est
invité à se connecter au premier réseau d'accès sans fil (130), et à
initier la diffusion du message sur le premier réseau d'accès sans fil (130), selon
lequel ledit dispositif sans fil (140) peut recevoir le message sur le premier réseau
d'accès sans fil.
23. Nœud de commande selon la revendication 22, comprenant une interface de communications
(830) connectée au circuit de traitement et configurée pour obtenir une instruction
pour initier une diffusion du message à des dispositifs sans fil associés à l'un ou
aux réseaux d'accès sans fil supplémentaires.
24. Nœud de commande selon la revendication 22 ou 23, dans lequel l'interface de communications
(830) est configurée en outre pour obtenir une notification d'un dysfonctionnement
dans un ou plusieurs réseaux d'accès sans fil supplémentaires.